hybrid_unique_index_with_updates.js runs multiple variations of the basic test for unique indexes built using the hybrid method. The test uses the same namespace test.hybrid during every test run. Sometimes the fail point enabled in a test run may interfere with the clean up from finalizing the replication two phase drop on a collection used in a previous test run. To mitigate this issue and to improve diagnostics in the case of a test failure, we should consider using a different namespace for every test run. This also makes it unnecessary to remove the collection at the beginning of every test run.